DE102009027403A1 - Electric operable kitchen-attachment device e.g. pan, for preparation or presentation of food, has heating device and power receiver exhibiting different deformed, outer contours and arranged in lateral displaced manner to each other - Google Patents

Abstract

The device e.g. pan (1) has a heating device i.e. resistor-thick layer (3) operable by a power receiver (2). The heating device and the power receiver exhibit different deformed, outer contours and are arranged in a lateral displaced manner to each other. A heat isolation material is provided under the heating device, where cross sectional surface of the power receiver is smaller than a heating surface of the heating device. The power receiver has a sensor coil for tapping of power from an alternating field and for generation of voltage that is utilizable for operation of the heating device. An independent claim is also included for a work plate that is provided with a power transmitter.

Description

The The invention relates to an electrically operated kitchen attachment device with at least one beneficiary and at least a heater operable by means of the power receiver, a Set of several electrically operated kitchen attachments and a worktop with at least one power transformer for transmitting energy to at least one electrical operable kitchen setter.

at current cooktops with heat-transmitting Cooking rings, which are a resistance heating or a radiant heater have a position of the hotplate and their diameter is usually fixed. An exception is only one with a multi-circuit heating Equipped hob, which up to three different diameters (concentric or as a roasting zone) may have. The for use with the heat-transmitting hotplates permissible pot diameter are limited because one too small Pot diameter prevents temperature regulation and high heat loss produced and a pot with a too large pot diameter only insufficiently heatable. The heat transfer performance The individual hobs is determined by the diameter of the heater predetermined and limited. In addition, a size a hob equipped with radiant heaters (and so that a position and the diameter of the burners) by a Size of a commonly used Glass ceramic hob limited.

Also in current induction hobs, the diameters of the Pots approximately correspond to those of the inductor to a to enable effective energy transfer.

at The above-mentioned hobs must be a cookware made of thermal Reasons a predetermined distance z. B. back walls and / or Sidewalls comply with what a positioning of the cookware even further restricts. Also is a maximum possible Surface temperature to comply with the support surface.

EP 1 505 854 B1 discloses a hob with any positioning of pans or the like, comprising a plurality of electrical heating elements disposed within a cooking area and individually power-powered.

For example, cooking systems based on transformer energy transfer are off DE 10 2006 017 800 A1 . DE 10 2006 017 801 A1 or DE 10 2006 017 802 A1 known.

DE 103 43 011 A1 describes a device for heating food by means of a transformatory energy transmission and a device for transmitting energy. DE 103 43 011 A1 is based on a device for heating food by means of a transformer energy transmission with a bottom element comprising a secondary winding formed from a conductor and a heating element connected to the winding. The invention also starts from a device for the transmission of energy into a device for heating food by induction with a primary winding formed from a conductor and connected to a voltage source. In order to achieve a low overall height of the floor element, it is proposed that a winding core is arranged within the winding.

It the object of the present invention is a particularly flexible To enable design of kitchen attachment devices.

These Task is performed according to the characteristics of the independent Claims solved. Preferred embodiments are in particular the dependent claims removable.

The Task is solved by means of an electrically operable Kitchen setter with at least one wireless operable recipient and one by means of at least a power receiver operable heater. The power receiver and the heater have a different, in particular differently shaped, outer contour on and / or are mutually offset laterally.

Under an attachment according to the preamble Here is generally understood a device that does not own connection to a supply network, z. B. a power plug, but in an essay on a hotplate (also called base station) draws a power from the hob. The hotplate is to typically with one matching the recipient of the service Power transformer equipped.

The Heating device may have one or more heating elements. The Heating device provides the electrically operable kitchen attachment device defined heating surface ready. The heating surface can be segmented be.

By using a power receiver instead of a heat transfer or an inductive eddy current heating decoupling of the shape, in particular outer contour, and the position of the heater of the shape and position of the power receiver can be achieved What allows a greater freedom of design in a design of the kitchen attachment device. Thus, an independent optimization of power receiver and heater can be achieved, for. B. with regard to an effective energy transfer and / or compact size in the power receiver and z. B. with regard to a uniform and large-scale heat generation in the heater. So pots and pans can be coupled with a large heating surface without sacrificing efficiency with a small power transformer.

It may be an embodiment that the recipient of the service at least one pickup coil for tapping power or energy from an alternating field, in particular alternating magnetic field, and for generating a for operating the at least one heating device usable voltage, in particular an induction voltage or a derived therefrom (eg rectified) voltage. This allows the kitchen attachment for be suitable for a transformatory energy transfer. In the transformatory energy transfer form at least a power receiver and at least one power transmitter a wireless power coupling, which z. B. as a shared Transformer can be displayed. The power transformer can also be used as a primary-side transformer half and the beneficiary as a secondary party Transformer half. The power transformer can but also be regarded as a primary-side coil and the service recipient as a secondary-side Kitchen sink.

Generally The set-top box can also be operated wirelessly in other ways be, for. B. capacitive.

It may still be an embodiment that the kitchen attachment device has multiple power receivers. This can be a further increased positioning flexibility achieved become. So can the kitchen attachment in one Continuing education by means of each of the beneficiaries operable and accordingly far over a power transformer protrude. It can also be a training that several Power receiver operate a heater together.

It may also be an embodiment that a heating surface the heater is larger than a cross-sectional area of the beneficiary. This allows a compact power transmission with effective heating of the kitchen attachment get connected. The heating surface of the heater can in particular at least 20% greater than that - in particular viewed in plan view - cross-sectional area the beneficiary, z. B. a secondary side Transformer half. A form of heating surface the heater can, for example, by an external Contour of a Heizleitererstruktur be described.

It can also be an embodiment that below the at least a heater is attached to a heat insulation. As a result, the bottom or the top surface of the kitchen attachment device insulated against the heater, whereby the attachment surface does not heat up significantly. Accordingly, the kitchen setter can also near a peripheral area of a work area (i.e., a countertop or a hob) or even over the work area Be arranged outside (eg close to a wall), without that there is a thermal overheating or even a Burning comes. Furthermore, a material of the bottom or Attachment surface of kitchen setter be chosen almost arbitrarily. So can the kitchen attachment for example, except a metallic attachment surface also an at least partially non-metallic attachment surface such as wood, felt, plastic (eg silicone-based), Leather, fabric, stone, glass u. v. m., which is a high design Freedom allows.

The electrically operated kitchen attachment device can For example, be at least a cookware, z. A pot, a pan, a roasting pan, etc.

The electrically operated kitchen attachment device can alternatively be a household small appliance, z. A kettle, an espresso machine, a toaster etc.

The Kitchen attachment can also at least a dinnerware be, z. B. a gravy boat, which by means of the heater also is usable as a holding vessel.

The Task is also solved by means of a set of several such electrically operated kitchen attachments, the kitchen setters of this set are the same or substantially equal sized power receivers use. So it's possible for very different Kitchen toppers the same or a very similar Beneficiary to use, what the cost of lowers the beneficiary.

The object is also achieved by means of a worktop, which is equipped with at least one power transformer for transmitting energy to at least one electrically operable kitchen attachment device, in particular at least one electrically operable kitchen attachment device as described above. This is a positioning of the at least one power transformer not only in the area of a typically restricted area of a hob, but the entire area of the worktop can be used. A hob, however, is a prefabricated, usually available in standard sizes unit on which hotplates are distributed compactly and which is inserted into a section of the usually much larger worktop.

According to one Continuing education is the countertop with a variable number of Power transformers can be equipped. The stove top can thus with respect to the number of power transformers be modular. This allows a hob to different boundary conditions be adapted, for. B. to a household with a high cooking volume (many power transformers or hobs) or a single household (less power transformers or cooking zones), without that a visible design of the hob to be changed needs. A smaller number of power transmitters allows a cheaper hob. An increase in the number of power transformers is also cheap compared to a new purchase.

It may be an embodiment that the at least one power transformer locally is variably positionable on the hob. By this local Variability can be very different forms of Power transmission areas formed by power transformers or hotplates are designed, which in particular from the previous can deviate common rectangular design. So can be arcuate, multi-row, trapezoidal, annular or freely shaped, etc., energy transfer areas designed a corresponding arrangement of the power transformer become. These energy transfer areas can due to the uniform or similar form of the beneficiaries the kitchen counter tops of a variety of such kitchen attachment devices are used. In particular, with a compact size, the power receiver also comparatively finely patterned energy transfer areas to be ordered.

One Another advantageous application of a locally variable Positioning can be that of positions of energy transfer areas or cooking zones (which by one or more power transmitter can be formed ergonomically to a specific Users can be customized. So can these Cookers closer to a small user a front edge of the countertop can be offset to a good one Achieve also the rear cookers allow and for a larger user if possible be distributed uniformly, at each of the hobs a wide device to be able to turn off.

The Hob can be generally modular, the power transformer represent individual modules which individually (with respect Number, position, shape, etc.) are arranged on the worktop can.

It can still be a training that the worktop with different molded power transformers can be equipped. This can also be a form of cooking surface (s) of the worktop without a deterioration in function more strongly to individual furnishing wishes be adjusted. Generally, the shape of a hotplate is not limited, but it can be arbitrarily shaped Cooking zones with arbitrarily shaped power transformers be used.

It especially when using thermally insulated kitchen attachments another embodiment may be that the hob has a surface may be made of a substantially arbitrary material. In In other words, in particular needs a material of a hob not to be designed particularly temperature-resistant. As materials For example, plastic, wood, felt, leather, fabric, Stone, glass, etc. can be used. So the worktop can be a have a uniformly shaped surface, z. As wood, etc., and it may be on special, temperature-resistant surface areas To be dispensed with cooking rings, which is a particularly creative high quality design allows. A position of a Cooker can, for example, by a decor or another Mark are displayed.

It can then be another embodiment that the worktop in a furniture, especially a dining table, is integrated. In this case, the furniture can in particular be designed so that his function as a worktop not perceived or not conspicuous is, for. B. because no specially temperature-resistant material for the surface of the cooking surface (s) is needed.

For example, a dining table can also be used for cooking at the same time. In operation, neither the worktop nor a bottom of the kitchen attachment device are hot, so that, apart from general behavioral rules for handling cookware, etc. no further precautions need to be taken. It is also easily possible to use different kitchen attachment devices for different occasions without further preparation. For example, a coffee maker and a toaster can be operated on the dining table (s) during a breakfast and a pot and a pan are prepared for preparing a lunch. The pan and pan can be kept warm on the hotplate during lunch. After operation, the Dining table as easy to clean as a normal dining table. The number of power transformers can be adapted, for example, to a number and type of food to be prepared or to a number of guests.

The Power transformers can be equipped with a central Networked electronic unit.

In The following figures illustrate the invention with reference to exemplary embodiments described in more detail schematically. It can for clarity identical or equivalent elements with the same reference numerals be provided.

1 shows in plan view an electrically operable kitchen attachment device in the form of a pan;

2 shows an oblique view of the pan 1 ;

3 shows a sectional view in side view of the pan 1 ;

4 shows an oblique view of an electrically operated kitchen attachment device in the form of a kettle;

5 shows in plan view of a bottom of the kettle 4 ;

6 shows an oblique view of an electrically operated kitchen attachment device in the form of another kettle;

7 shows in plan view of a bottom of the kettle 6 ;

8th shows an oblique view of an electrically operated kitchen attachment device in the form of a wok;

9 shows the wok 8th in plan view;

10 shows an oblique view of an electrically operated kitchen attachment device in the form of a brewer;

11 shows the roasting pan 10 in plan view;

12 shows an oblique view of a dining table with a built-in hob.

1 shows in plan view and 2 shows an oblique view of an electrically operated kitchen attachment in the form of a pan 1 , The pan 1 is with a beneficiary 2 (dashed lines) and with a heating device in the form of a band-shaped, wound and area distributed resistance thick film 3 equipped. The beneficiary 2 has at least one pick-up coil accommodated in a pot core for tapping energy from an alternating magnetic field and for generating one for operating the resistance thick film 3 usable induction voltage (or a derived, eg rectified, voltage). By means of the resistance thick film 3 becomes a heating surface on a floor 4 the pan 1 formed, which has a substantially rectangular outer contour. In practice, the thick films are resistive 3 arranged so close to each other that between individual track sections existing gaps to prevent a short circuit does not significantly reduce heating power.

While thus the resistance thick film 3 has an at least substantially rectangular outer contour in plan view, has the power receiver 2 a deviating in plan view round contour. In addition, a size of the thick film resistor 3 or the heating surface formed by it in plan view considerably larger than an area of the power receiver 2 ,

This pan 1 can also be placed on a relatively small power transformer of a hob and yet operated without loss of efficiency or even loss of function with a full heating power, since the size of the heating surface is decoupled from the size of an energy transfer surface. In particular, the pan 1 in a system with standardized service receivers 2 and power transformers, which are matched in size with each other, are operated with an optimal efficiency in this regard. It can through the resistance thick film 3 formed or covered heating surface can be changed in size and / or shape without loss of efficiency and / or in the heating power occurs. As a result, an embodiment of the heating surface of the pan 1 largely independent of a size, shape and / or position of the beneficiary 2 be selected, resulting in a greater freedom of design. For example, the pan bottom needs 4 at least not completely made of a good heat conducting material, so that there is a much freer selection of materials.

3 shows the pan 1 out 1 and 2 as a sectional view in side view. The thick film of resistance 3 is underside on a top 5 of the pan bottom 4 Applied and can thus heat directly to the top 5 on which a food is placed, deliver. Below the resistance thick film 3 is the service recipient 2 arranged, which voltage connections 6 and power supply lines 7 to supply the resistance thick film 3 having.

In operation, the pan 1 with its top surface 8th placed on a hotplate of a hob (not shown) so that the recipient of the service 2 above a power transfer of the hob comes to rest. The power transformer generates an alternating magnetic field, which from the power receiver 2 generating an induction voltage at its terminals 6 is tapped. The induction voltage can directly or after an at least partial rectification to the thick film resistor 3 be created. By a current flow generated by means of the induction voltage through the thick film resistor 3 it heats up.

For thermal insulation of the power receiver 2 and the top surface 8th opposite the resistance thick film 3 is the ground 4 the pan 1 with a high quality insulation material 9 in which both the beneficiary 2 as well as the thick film of resistance 3 is embedded. By the insulating material 9 Ensures that both the beneficiary 2 as well as the top surface 8th during operation of the pan 1 does not heat significantly, so there is no thermal damage to the pan 1 another object on which the pan 1 is filed, nor a user of the pan 1 in contact with the attachment surface 8th comes. Further details and / or embodiments may, for example, the DE 103 43 011 A1 be removed.

4 shows an electrically operated kitchen attachment in the form of a kettle 10 in oblique view, and 5 shows a floor 11 of the kettle 10 in plan view. A heating device in the form of a band-shaped resistance thick film 12 Now it winds so that it creates a heating surface with a substantially triangular outer contour. This heating surface is capable of the triangular bottom 11 the kettle 10 essentially complete completely and thus optimally to heat. An energy transfer to the service recipient 2 is of the shape of the thick film resistor 12 independent, but depends on the form of the beneficiary 2 from. Therefore, a heating effect can be largely decoupled from an energy transfer effect. In particular, in the kettle 10 a power receiver adapted to the power transformer of the hob 2 be installed. The beneficiary 2 can be the same beneficiary 2 as in 1 and 2 be so that its production can be made in large quantities and therefore relatively inexpensive. In particular, the same service recipient 2 for a whole set of different system devices (pots, pans, small household appliances, etc.).

6 shows an oblique view of an electrically operated kitchen attachment device in the form of another kettle 13 , and 7 shows a floor in plan view 14 of the kettle 13 , Unlike the kettle 10 out 4 is the ground 14 now roughly in the form of a bicycle saddle with a narrow, rounded tip 15 and a curved stomach 16 designed. The band-shaped resistance thick film 17 it now writhes so that it becomes one of the shape of the ground 14 fits in about matching bicycle saddle-shaped outer contour. Thus, this is also due to the band-shaped resistive thick film 17 formed bicycle saddle-shaped heating surface capable of the ground 14 of the kettle 13 to heat optimally.

Energy can continue without a loss in efficiency to the power receiver 2 be transmitted. Unlike the kettle 10 out 4 is the service recipient 2 not in a geometric center of gravity or center of the ground 14 and thus the heating surface arranged, but in the direction of a rear wall 18 offset, allowing for easier positioning of the kettle 13 on a power transformer allows.

8th shows a wok 19 in oblique view, and 9 shows the wok 19 in plan view. The beneficiary 2 of the wok 19 is arranged in the middle. A thick film of resistance 20 winds around a bowl-shaped arched wall 21 of the wok 19 helically along.

10 shows a roasting pan 22 with an oval bottom 23 and a correspondingly wound resistance thick film 24 in an oblique view, 11 shows the roasting pan 22 in plan view. In contrast to the embodiments described above, the roaster 22 now two beneficiaries 2 on, which in a row equidistant along the longitudinal extent of the soil 23 are arranged. The roasting pan 22 can be with one or more of the beneficiaries 2 be operated, so the roasting pan 22 can be operated with a high flexibility in its positioning on a hob.

12 shows a dining table 25 in which a surface 26 a tabletop 27 as a countertop is usable. These are at the bottom of the table top 27 different power transformers 28 . 29 . 30 freely positionable attached. A central cooking area 31 is by means of a double row of rectangular power transmitters 28 formed, with the central hotplate 31 on their front sides in each case by a triangular power transformer 29 is completed. Locally from the central cooking area 31 separated are four round power transfer ger 30 arranged. The power transformer 28 . 29 . 30 For example, they can be populated by a customer service representative or, if necessary, by an end user. In the case shown, the central hotplate 31 For example, record one or more cookware or serving dishes for the preparation and / or presentation of a main course, for. B. to operate a raclette grill. The four round power transformers 30 For example, they can be used to operate guest-specific keepers, eg. B. for electrically operated cups, rice bowls and more

A display and / or control panel (not shown) can, for example, into the surface 26 the tabletop 27 let in to control the hob, z. B. to turn it on and off or to control the devices placed on it.

Since the devices to be used with the worktop are thermally well insulated on their underside against the heating units, the surface needs 26 the tabletop 27 with regard to the materials used to be adapted to their function as a countertop or cooking area. The worktop does not appear in terms of design, and the dining table 25 can also be used like a traditional dining table.

The power transformer 28 . 29 . 30 can be networked with a central electronic unit.

Of course the present invention is not limited to the embodiments shown.

So can generally groups of power transmitters powered by a common power unit. A Extension of a worktop to additional power transformer can with a provision of an additional power unit be connected.

Also can be the power transformers and the power receivers standardized in a cooking system, i. h. that for use System devices provided with the system (cookware, small domestic appliances, Serving dishes, etc.) with the same or a similar pronounced Power receiver are equipped and power transformer of the system are the same or similar. Thereby can be a well coordinated energy transfer be ensured.

Then, for example, the dining table off 12 be designed so that it has only the same power transformer

LIST OF REFERENCE NUMBERS

1

pan

2

recipients

3

Resistance thick film

4

pan bottom

5

top of the pan bottom

6

voltage connection

7

Power line

8th

bearing surface

9

insulating material

10

water heater

11

ground of the kettle

12

Resistance thick film

13

water heater

14

ground

15

top

16

curved belly

17

Resistance thick film

18

rear wall

19

Wok

20

Resistance thick film

21

wall

22

roaster

23

ground

24

Resistance thick film

25

dining table

26

surface

27

tabletop

28

Power Transformers

29

Power Transformers

30

Power Transformers

31

cooking

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• EP 1505854 B1 [0005]
• DE 102006017800 A1 [0006]
• - DE 102006017801 A1 [0006]
• DE 102006017802 A1 [0006]
• DE 10343011 A1 [0007, 0007, 0051]

Claims (15)

Electrically operated kitchen attachment ( 1 ; 10 ; 13 ; 19 ; 22 ) with at least one wirelessly operated power receiver ( 2 ) and at least one by means of the at least one beneficiary ( 2 ) operable heater ( 3 ; 12 ; 17 ; 20 ; 24 ), characterized in that the service recipient ( 2 ) and the heater ( 3 ; 12 ; 17 ; 20 ; 24 ) have a different, in particular differently shaped, outer contour and / or mutually offset laterally. Electrically operated kitchen attachment ( 1 ; 10 ; 13 ; 19 ; 22 ) according to claim 1, characterized in that the service recipient ( 2 ) at least one pickup coil for tapping power from an alternating field and for generating a for operating the at least one heating device ( 3 ; 12 ; 17 ; 20 ; 24 ) has usable voltage. Electrically operated kitchen attachment ( 1 ; 10 ; 13 ; 19 ; 22 ) according to one of the preceding claims, characterized in that below the at least one heating device ( 3 ; 12 ; 17 ; 20 ; 24 ) a thermal insulation ( 9 ) is attached. Electrically operated kitchen attachment ( 1 ; 10 ; 13 ; 19 ; 22 ) according to claim 3, characterized in that the kitchen attachment ( 1 ; 10 ; 13 ; 19 ; 22 ) an at least partially non-metallic attachment surface ( 8th ) having. Electrically operated kitchen attachment ( 22 ) according to one of the preceding claims, characterized in that the kitchen attachment ( 22 ) several beneficiaries ( 2 ) having. Electrically operated kitchen attachment ( 1 ; 10 ; 13 ; 19 ; 22 ) according to one of the preceding claims, characterized in that a cross-sectional area of the power receiver ( 2 ) smaller than a heating surface of the heating device ( 3 ; 12 ; 17 ; 20 ; 24 ). Electrically operated kitchen attachment ( 1 ; 19 ; 22 ) according to one of the preceding claims, characterized in that the kitchen attachment ( 1 ; 19 ; 22 ) at least one cookware ( 1 ; 19 ; 22 ). Electrically operated kitchen attachment ( 10 ; 13 ) according to one of claims 1 to 6, characterized in that the kitchen attachment ( 10 ; 13 ) a small household appliance ( 10 ; 13 ). Electrically operated kitchen attachment after one of claims 1 to 6, characterized in that the kitchen attachment at least one dinnerware is. Set of several electrically operated kitchen attachments ( 1 ; 10 ; 13 ; 19 ; 22 ) according to any one of the preceding claims, characterized in that the kitchen attachment devices ( 1 ; 10 ; 13 ; 19 ; 22 ) of this sentence are essentially the same beneficiaries ( 2 ) use. Worktop ( 26 ), characterized in that the worktop ( 26 ) with at least one power transformer ( 28 . 29 . 30 ) for transferring energy to at least one electrically operated kitchen attachment ( 1 . 10 . 13 . 19 . 22 ) is equipped. Worktop ( 26 ) according to claim 11, characterized in that the worktop ( 26 ) with a variable number of power converters ( 28 . 29 . 30 ) can be equipped. Worktop ( 26 ) according to one of claims 11 or 12, characterized in that the at least one power transformer ( 28 . 29 . 30 ) locally variable at the worktop ( 26 ) is positionable. Worktop ( 26 ) according to one of claims 11 to 13, characterized in that the worktop ( 26 ) with differently shaped power transmitters ( 28 . 29 . 30 ) can be equipped. Worktop ( 26 ) according to one of claims 11 to 13, characterized in that the worktop ( 26 ) in a piece of furniture ( 25 ), in particular a dining table ( 25 ) is integrated.

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